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Location Spain, Aragón
Central coordinates 0o 45.00' West  41o 30.00' North
IBA criteria C6
Area 7,400 ha
Altitude 160 - 206m
Year of IBA assessment 2000


Site description A 25-km stretch of the River Ebro downstream from Zaragoza, including a number of abandoned meanders. Some areas of alluvial woodland, ponds and small areas of marsh vegetation remain in an otherwise intensively cultivated area.

Key Biodiversity This is an important site for breeding herons and migrating passerines.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Black-crowned Night-heron Nycticorax nycticorax breeding  1996  90-100 breeding pairs  medium  C6  Least Concern 
Purple Heron Ardea purpurea breeding  1996  10-12 breeding pairs  good  C6  Least Concern 
Egretta garzetta breeding  1996  10-12 breeding pairs  good  C6  Not Recognised 
Western Marsh-harrier Circus aeruginosus resident  1996  3-4 breeding pairs  good  C6  Least Concern 


IUCN habitat Habitat detail Extent (% of site)
Forest Alluvial and very wet forest  30%
Wetlands (inland) Rivers and streams; Standing freshwater; Water fringe vegetation  25%
Artificial - terrestrial Arable land; Forestry plantations  60%

Land use

Land-use Extent (% of site)
agriculture 50%
forestry 30%
hunting 85%
nature conservation and research 15%

Protection status National Partial International Partial777 ha of IBA covered by Natural Reserve (Galachos de la Alfranca de Pastriz, la Cartuja y El, 777 ha). 777 ha of IBA covered by Special Protection Area (Galachos de la Alfranca de Pastriz,la Cartuja y El, 777 ha).

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Recommended citation  BirdLife International (2015) Important Bird and Biodiversity Area factsheet: River Ebro ox-bow lakes. Downloaded from on 26/11/2015

To provide new information to update this factsheet or to correct any errors, please email BirdLife